Results. The index case had two doses of measles-containing vaccine. Of 88 contacts, four secondary cases were confirmed that had either two doses of measles-containing vaccine or a past positive measles IgG antibody.

Conclusions. This is the first report of measles transmission from a twice vaccinated individual. The clinical presentation and laboratory data of the index were typical of measles in a naïve individual. Secondary cases had robust anamnestic antibody responses. No tertiary cases occurred despite numerous contacts. This outbreak underscores the need for thorough epidemiologic and laboratory investigation of suspected measles cases regardless of vaccination status.

Measles also causes deaths and disabilities, more of them. While 5 vaccinated people (the vast majority of New Yorkers) were getting measles in New York, so were 58 unvaccinated people. Looks like loaded dice to me.